The proportion of main workers decline from 32.4% in 1961 to 29.7% in 1981 in the Urban Agglomeration and from 39.7% to 31.9% in Bangalore District during the same period. The main reason for this appears to the incorporation of a number of villages into the Urban Agglomeration between 1961 and 1981. The working force in Bangalore in 1991 was about 1,267 thousand constituted 29.1% of the population.
The decade of the nineteen sixties saw the remarkable changes in the occupational structure of Bangalore Urban Agglomeration. The share of the primary sector decline from 7.8% in 1961 to 2.7% in 1971, while that of the secondary sector went up from 34.6% to 37.4%. The proportion of tertiary sector also increased significantly. The nineteen seventies, though a period of rapid growth, resulted in little change in the occupational structure. This is also explained by the incorporation of urbanized villages into the Urban Agglomeration.